Form 112 fee and condonation letter

My articleship period was from feb 2014-feb 2017. During that period i also pursued mcom by correspondence. I didnt submit form 112 since i was not aware whether for correspondence courses the form has to be submitted or not. Now while applying for membership number, icai is demanding form 112 with fees of rs11800 and condonation letter. Kindly guide me on the issue